At the risk of abusing a deceased equine I would suggest those interested in learning more about ChatGPT read the following link:

acoup.blog - Collections on chatgpt

Bret Devereaux is a Prof. of History at UNC Chapel Hill and writes mostly about ancient history but, since he also teaches classes where essays are on the bill of fare he has some thoughts on essay-generation by ChatGPT and its ilk. TLDR: ChatGPT is really good at generating words that seem to be related to the prompt and are often seen near each other. It doesn't think so has no idea whether the words have any validity. Thus it is capable of stating facts that are clearly wrong and of making up citations that don't exist. Any professor who actually cares what the student is writing will quickly realize that the essay that was handed in was not written with thought in mind, only with probabilities.

As to how this affects Google, IMHO the public will like shiny! for a while but in the long run its model for indexing the web seems rock-solid and as a result its ability to sell ads better than the competition should remain.

Rgds,
HH/Sean